Trump administration officials are preparing to issue a proposal within days to freeze fuel-efficiency standards for cars and light trucks for six years and challenge the right of California and other states to set their own tailpipe standards, according to four current and former federal officials. The move would amount to one of the biggest regulatory rollbacks of the Trump presidency. The proposal, driven by a new analysis prepared by the Transportation Department’s National Highway Traffic Safety Administration (NHTSA), is likely to mark a sharp reversal from the findings NHTSA and the Environmental Protection Agency reached a year and a half ago in the waning days of the Obama administration. In late 2016, the agencies concluded that stricter fuel-efficiency targets would save consumers money without compromising safety. Now, the current […]